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Showing 1–4 of 4 results
Advanced filters: Author: Frederic Demmerle Clear advanced filters

  • Compact, tunable terahertz sources are highly desired for sensing and imaging applications. Here Vijayraghavan et al. demonstrate room-temperature quantum cascade laser sources based on the non-linear optical conversion of mid-infrared light that provide a tunable output over a 3.5-THz bandwidth.

    • Karun Vijayraghavan
    • Yifan Jiang
    • Mikhail A. Belkin
    Research
    Nature Communications
    Volume: 4, P: 1-7

  • By coupling plasmonic resonators with a semiconductor heterostructure, researchers control the nonlinear response by a bias voltage, thereby enabling spectral tuning, dynamic intensity modulation and dynamic beam manipulation for second-harmonic generation.

    • Jaeyeon Yu
    • Seongjin Park
    • Jongwon Lee
    Research
    Nature Photonics
    Volume: 16, P: 72-78

  • Multiple-quantum-well semiconductors can provide one of the largest known nonlinear material responses, which is, however, geometrically limited to light beams polarized perpendicular to the semiconductor layers; by coupling a plasmonic metasurface to the semiconductor heterostructure, this limitation can be lifted, opening a new path towards ultrathin planarized components with large nonlinear response.

    • Jongwon Lee
    • Mykhailo Tymchenko
    • Mikhail A. Belkin
    Research
    Nature
    Volume: 511, P: 65-69